Medicare’s annual enrollment period (AEP) is from October 15th through December 7th. This is your opportunity to change your health plan for the next calendar year.
Additionally, Medicare has a Medicare Advantage (MA) Open Enrollment Period, this is for those who are already in a MA plan, from January 1st through March 31st. During this period you may do the following:
- Switch to another Medicare Advantage Plan
- Drop your Medicare Advantage Plan and go back to Original Medicare
New to Medicare? Attend a meeting
If you are new to Medicare, or would just like more information about all the options you have once you have Medicare, please consider joining us at one of our monthly MEDICARE EXPLAINED: Know Your Options meetings. We offer these meetings as a webinar.
MEDICARE EXPLAINED: Know Your Options
Important information for this Medicare enrollment period
For 2027, Northbay Health will accept the following plans:
- Medicare Supplemental Plans A–N (such as AARP Medicare Supplement, Mutual of Omaha, USAA, etc.)
- Humana Medicare Advantage (HMO) (Napa County residents only. Northbay Health physicians are listed under Amada Medical Group.)
- Original Medicare
- Anthem Dual Advantage 2 (PPO D-SNP)
- UnitedHealthcare Medicare Advantage Plans* (in 2027, all primary care providers and specialty providers are in-network)
- UnitedHealthcare AARP Medicare Advantage (CA-033 HMO/POS)
- UnitedHealthcare Complete Care Support CA-8AP (HMO-POS C-SNP)
For 2026, Northbay Health will accept the following plans:
- Central Health Plan Medicare Advantage Plans (Hill Physicians Medical Group participating products only. Northbay Health doctors will be listed as Hill Physicians)
- Central Health Classic Care Plan III (HMO)
- Central Health Dual Access Plan (HMO D-SNP)
- Central Health Embrace Care Plan (HMO C-SNP) 25-3
- Central Health Embrace Choice Plan (HMO C-SNP) 26-3
- Humana Medicare Advantage (HMO)(Napa County residents only. Northbay Health physicians are listed under Amada Medical Group.)
- Original Medicare
- Medicare Supplemental Plans A–N (such as Mutual of Omaha, USAA, etc.)
- Anthem Dual Advantage 2 (PPO D-SNP)
- UnitedHealthcare Medicare Advantage Plans*
* You can use the UnitedHealthcare plans to see specialists (like heart or cancer providers) and to receive care at our hospitals. UnitedHealthcare will not cover visits with our primary care providers.
This page provides information for individuals who purchase insurance on their own to supplement their Medicare benefits. For questions about your options, we encourage you to speak with your insurance broker or attend a local Medicare educational meeting.
If you receive insurance through an employer, or former employer, your health plan coverage options will be different and specific to your employer.